Phosphorus trichloride is important in the manufacture of insecticides, fuel additives, and flame retardants. Phosphorus has only one naturally occurring isotope, 31P, whereas chlorine has two, 35Cl (75%) and 37Cl (25%). (a) What different molecular masses (in amu) can be found for PCl3? (b) Which is the most abundant? (c) What is the ratio of the effusion rates of the heavi est and the lightest PCl3 molecules?

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: According to ideal gas law (for chlorine gas), PV = nRT where P = pressure in atm = Pressure in torr…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: The considered reaction is, MnO2 (s) + 4HCl (aq)→MnCl2(aq) + 2 H2O (l) +Cl2 (g)

Q: Iodomethane is a common liquid used in the laboratory. It vaporizes readily. If the pressure of…

A: Concept: Ideal Gas Equation P*V = n* R*T where n = moles = Mass (m)/ Molar Mass (M) P*V = (m/M) *…

Q: Boron trifluoride gas is used in the manufacture of computer chips. Given that 1.505 g of the gas…

A: STP is defined as the standard temperature, pressure condition at which the temperature of the gas…

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A: Boyle's law states that at constant temperature pressure of the gas is inversely proportional to the…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: The two isotopes of uranium, 238U and 235U, can be separated by effusion of thecorresponding UF6…

A:

Q: A sample of nitrogen is collected by water displacement at 730,0 mm Hg and 20°C. What is the partial…

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Q: 1. A flask contains 155 cm of hydrogen collected at a pressure of 22.5 kPa. 3 Under what pressure…

A:

Q: A 36.0–L cylinder of a gas used for calibration of blood gas analyzers in medical laboratories…

A: The ideal equation for gas is given by,                                               PV = nRT…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given Temperature = 25 oC = (273+25)K = 298 K Pressure = 705 torr = 705/760 = 0.927 atm Volume = 285…

Q: Calculate the density of uranium (VI) fluoride, UF6, at 70.0 °C and 25.0 kPa.

A: density of uranium (VI) fluoride, UF6 = d = ................ Molar mass of UF6 = M = 352 g/mol…

Q: The gas from an active volcano had the following composition in mole percent; 65 % CO,, 25% H, 5.4 %…

A: The partial pressure of a substance is equal to the product of its mole fraction and pure vapor…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: If the mercury in a manometer raises 30.0 millimeters due to a change in pressure, what is the…

A: Mercury manometer raises=30.0 mm Pressure (in atm)=? 1 atmosphere (atm) = 760 millimeters of Hg…

Q: Calculate the height of a mercury column required to produce a pressure. 1) Of 0.993 atm. 2) Of 936…

A: 1) since 1 atm = 760 mm Hg  Hence the height of mercury column = pressure in atm X 760 = 0.993 X 760…

Q: What is the ratio of the average kinetic energy of a SO2 molecule to that of an O2 molecule in a…

A: …

Q: At what temperature does the speed of carbon dioxide molecules, CO2, equal 350.0 m/sec?

A:

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: If He(g) has an average kinetic energy of 6750 J/mol under certain conditions, what is the root mean…

A: The root mean square velocity of gas is inversely proportional to the square root of its molecular…

Q: 13.2p. What happens to the mass of air when water vapor is introduced at the same pressure and…

A: the mass of air when water vapor is introduced at the same pressure and volume will be:

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given the chemical reaction for the prepration of chlorine as…

Q: 2. What is the density of nitrogen gas at 44.8°C and 141 kPa?

A:

Q: In one lab, the gas-collecting apparatus used a gas bulb with a volume of 231 mL. How many grams of…

A: Given: Volume of CO2 produced = 231 mL = 0.231 L                                           (Since 1…

Q: What volume is occupied by 0.781 mol of CO2 at 237.5 K and 977 mmHg?

A: Write down what information is given to you

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A: The expression for the pressure exerted by mercury column is as follows,…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Volume of Cl2 = 255 mL or 0.255 L Temperature = 25◦C or (273.15 + 25) K Pressure = 745 torr or…

Q: Hydrogen gas is produced when zinc reacts with sulfuric acid:Zn(s) + H2SO4(aq)------>ZnSO4(aq) +…

A: According to the gas equation, P V = n R T … (1) Substituting the values in eq (1),  {1 L * torr =…

Q: A chemist is investigating the conversion of atmospheric nitrogen to usable form by the bacteria…

A: Given information,    1.25 g of nitrogen gas in a flask of volume 250 mL at 20 °C.         moles of…

Q: At what temperature Celsius will 0.670 mol of molecular oxygen, O2, exert a pressure of 1875 mm Hg…

A: An ideal gas is a gas in which the moving particles present interact only through elastic collisions…

Q: 3.19K HI B. What mass of aluminum metal must be dissolved in excess hydroiodic acid to pro L of…

A:

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: The given chemical equation is as follows: MnO2(s) + 4HCl(aq) → MnCl2(aq) + 2H2O(l) + Cl2(g) The…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given balanced equation is MnO2(s) + 4HCl(aq) ------> MnCl2(aq) + 2H2O(l) + Cl2(g) From balanced…

Q: A bottle contains 1.0 mol He(g) and a second bottle contains 1.0 mol Ar(g) at the same temperature.…

A: The root mean square velocity is the square root of mean of squares of velocities of the individual…

Q: what is the density of iodine gas at 30 degree celsius and 2.12atm

A: Given, Formula of iodine gas = I2 Temperature (T) = 30°C = (273.15 + 30) K  = 303.15 K Pressure (P)…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: Phosphorus trichloride is important in the manufacture of insecticides, fuel additives, and flame…

A: The solutions are given below

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: A small amount of oxygen gas may be prepared in the laboratory by the decomposition of potassium…

A: The given equation is The amount of KClO3 is 1.54 g, temperature is 250C and total pressure is…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: A flask of volume 0.753 L contains a sample of chlorine gas, Cl2, with a pressure of 198 Torr at…

A: Volume = 0.753 L  Pressure = 198 torr  Temperature = 25.8 °C  Mass of sodium required to completely…

Q: What volume would 20.0g of CO2 occupy at a temperature of 25 °C and a pressure of 105 kPa?

A:

Q: A 5.00 mol sample of oxygen gas is confined to a pressure of 5atm at a temperature of 27degrees…

A: Given  O2 gas Moles of O2 gas, n = 5.00 mol Pressure of O2 gas , P = 5 atm Temperature of O2 gas , T…

Q: What is a supercritical gas? What is the function of a modifier?.

A: Since you have posted multiple questions in a single session we are entitled to answer only first…

Q: The height of the mercury in the right arm of a manometer open to atmospheric pressure (760 mmHg) is…

A: The pressure of gas present inside the bulb is expressed as follows,

Q: In an experiment, 175 mL of nitrogen gas was collected over water at 23.5 oC and 757 mmHg. What mass…

A: Given,175 mL of nitrogen gas was collected over water at 23.5oC and 757 mmHg.The vapour pressure of…

Q: The total pressure exerted by a mixture of He, Ne, and Ar gases is 2.00 atm. What is the partial…

A: Dalton's law ( also called Dalton's law of partial pressure) that  in a mixture of non reacting…

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.